/*
 * Copyright (c) Huawei Technologies Co., Ltd. 2023. All rights reserved.
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
#include "backup_file_tracer.h"

using namespace ock::bg::backup;

void BackupFileTracer::TraceOpen(int fd, const std::string &name, int64_t inode) noexcept
{
    pthread_spin_lock(&lock);
    auto pos = tracers.find(fd);
    if (pos == tracers.end()) {
        tracers.emplace(fd, FileTraceCount{ name, inode });
    } else {
        pos->second.count++;
    }
    pthread_spin_unlock(&lock);
}

bool BackupFileTracer::CloseFind(int fd, FileTrace &tracer) noexcept
{
    bool found = false;

    pthread_spin_lock(&lock);
    auto pos = tracers.find(fd);
    if (pos != tracers.end()) {
        found = true;
        tracer = pos->second.trace;
        if (--pos->second.count <= 0L) {
            tracers.erase(pos);
        }
    }
    pthread_spin_unlock(&lock);

    return found;
}
